Electrodialytic removal of cadmium from wastewater sludge

Citric acid and ethylene diamine tetra-acetic acid as effective washing agents to treat sewage sludge for agricultural reuse

“…This increase in organic matter content when CA was used to treat sludge can be attributed to a change in the structure of the sludge (Jakobsen et al, 2004;Hahladakis et al, 2014;Suèr et al, 2003;Wang et al, 2015). In previous studies, Wang et al (2015) also observed increases after CA extraction; specifically, the organic matter content in the sludge from that study increased from 256.2 to 376.7 g/kg because of the residual citric acid, which may act as a nutrient source for fertilizers.…”

Comparison of two different electrodialytic cells for separation of phosphorus and heavy metals from sewage sludge ash

“…1a) (Jakobsen et al, 2004;Ottosen et al, 2007Ottosen et al, , 2014Ebbers et al, 2012). The electrodes are placed in separate compartments (I and III) where electrolyte solutions are circulated.…”

Electrodialytic extraction of Cd and Cu from sediment from Sisimiut Harbour, Greenland

“…The total mass of the sediment was also reduced during the experiments (see Table 3) and this is due to dissolution of carbonates (about 1.3-2.4% in the actual sediments) and other particles that are dissolved in the acidic environment and partly due to oxidation of organic matter during the electrodialytic process as it is known from electrodialytic treatment of wastewater sludge [15].…”